Home / 372,189.39-513,358.34-257,503.11

Finding the Fourth Proportional to 372,189.39, 513,358.34 and 257,503.11

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Solution

The fourth proportional to 372,189.39, 513,358.34 and 257,503.11 is: 355,172.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,189.39 : 513,358.34 = 257,503.11 : x
  2. Step 2: Convert to fraction form
    372,189.39/513,358.34 = 257,503.11/x
  3. Step 3: Cross multiply
    372,189.39x = 513,358.34 × 257,503.11
  4. Step 4: Simplify right side
    372,189.39x = 132,191,367,806.92
  5. Step 5: Solve for x
    x = 132,191,367,806.92/372,189.39
  6. Step 6: Final answer
    x = 355,172.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.